I used to own a CAL Audio Delta CD transport feeding my THETA Pro-Basic 3 DAC. The CAL is built like a tank and has 3 separate digital outputs, Balanced, RCA, and Toslink. If there are any out there I'm sure you could get one on the cheap.
By the way, I replaced the above set-up with a Cambridge 840C CDP/DAC and have no regrets and may be another option for you. If you read reviews on the 840C its noted as being a very good CD transport. The 840 has been replaced by the 851, so you can probably pick up an 840 on the cheap as I did. One last option I would like to suggest is a Sony SCD C2000ES 5 disk CD changer. Its my SACD player and of course CD's, it has RCA Coax and Toslink outputs (outputs CD only and mutes when playing back SACD's). Again, it's an older unit you can probably pick up for around $300? It sounds great through my 840C and you can load up 5 disks!